Year | Value | 2022 | 80.52775094 | 2021 | 80.68989314 | 2020 | 81.34269353 | 2019 | 73.91243991 | 2018 | 70.43428254 | 2017 | 67.47128452 | 2016 | 60.87254007 | 2015 | 58.32795173 | 2014 | 54.55100188 | 2013 | 51.04 | 2012 | 48.56 | 2011 | 45.69 | 2010 | 40.65 | 2009 | 39.22 | 2008 | 33.83 | 2007 | 30.88 | 2006 | 28.17838018 | 2005 | 21.02274725 | 2004 | 19.07367227 | 2003 | 13.2075861 | 2002 | 9.149425086 | 2001 | 4.528494869 | 2000 | 2.870685159 | 1999 | 2.038732184 | 1998 | 1.477874959 | 1997 | 0.786079155 | 1996 | 0.450789179 | 1995 | 0.105138168 | 1994 | 0.037672709 | 1993 | 0.025498253 | 1992 | 0.012946262 | 1991 | 0.003288171 |
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